No, the devil's phone number is not real. Many associate the numbers 666 with the devil.
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The square root of 2 is real number but it is not rational number because it can't be expressed as a fraction.
Any odd root, for example the cube root, of -3.24 is a real number.
1/2, 5, pi, respectively
No, all integers are real numbers, but not all real numbers are integers. For example, 1.25 is a real number and a non-integer.No.
Yes. And since Real numbers are a subset of complex numbers, a complex number can also be a pure real.Another AnswerYes, for example: (0 + j5) is a complex number, whose 'real' number is zero.